C Program - Factorial of a Number Using Recursion
C Programming Language Recursion in c (Article) Recursion in c (Program)
809Program:
#include long int multiplyNumbers(int n); int main() { int n; printf("Enter a positive integer: "); scanf("%d", &n); printf("Factorial of %d = %ld", n, multiplyNumbers(n)); return 0; } long int multiplyNumbers(int n) { if (n >= 1) return n*multiplyNumbers(n-1); else return 1; }
Output:
Enter a positive integer: 6 Factorial of 6 = 720
Explanation:
Suppose the user entered 6.
Initially, the multiplyNumbers()
is called from the main()
function with 6 passed as an argument.
Then, 5 is passed to the multiplyNumbers()
function from the same function (recursive call). In each recursive call, the value of argument n is decreased by 1.
When the value of n is less than 1, there is no recursive call.
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